Hello,

Since upgrading to 3.2.x (maybe .10 or 11) we have seen mongo consuming swap space on our servers.

At the beginning of this graph is when we have restarted mongod freeing up the swap. Adding more swap provides a longer time period before we require restarting mongod. So far I have not found the upper limit to what mongod will consume. The max we have added is 8gb of swapfile.

             total       used       free     shared    buffers     cached
Mem:           59G        59G       444M       724K        27M        26G
-/+ buffers/cache:        32G        27G
Swap:         2.0G       1.8G       254M

Kind regards,
Luke